.btn-brand {
    background-color: var(--brand-color);
    border-color: var(--brand-color);
    color: #fff;
}

.btn-brand:hover {
    background-color: var(--brand-color-dark);
    border-color: #fff;
    color: #fff;
}

.btn-outline-brand {
    color: var(--brand-color);
    border-color: var(--brand-color);
}

.btn-outline-brand:hover {
    background-color: var(--brand-color);
    color: #fff;
}

.carousel-indicators button {
    background-color: var(--brand-color);
    opacity: 0.5;
}

.carousel-indicators button.active {
    opacity: 1;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    filter: drop-shadow(0 0 2px rgba(0,0,0,0.5));
}

.banner-image {
    background-size: cover;
    background-position: center;
    min-height: 500px;
    display: flex;
    align-items: center;
    position: relative;
}

.banner-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
}

.banner-content {
    position: relative;
    max-width: 800px;
    color: #fff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.big-showcase {
    height: 550px;
    position: relative;
    .container-fluid{
        position: relative;
        height: 100%;
    }
    text-align: center;
    img.bg{
        left: 0;
        position: absolute;
        height: 100%;
        width: 100%;
    }

    a.button {
        padding: 7px 30px;
        color:rgb(3,3,55);
        &.link-underline{
            color:rgb(255,255,255);
            text-shadow:0 2px 5px #2b2d42;
        }
    }

    .text-box {
        text-align: left;
        max-width: 600px;
        margin-left: 10%;
        h1 {
            text-shadow:0 2px 5px #2b2d42;
            padding: 10% 0 5% 0;
            color: #fff;
            font-weight: 700;
            font-size: 3em;
        }

        .link-container {
            padding: 0 10% 10% 15%;
        }
    }

    .number-box {
        position: absolute;
        bottom: -4.8em;
        width: 100%;
        text-align: center;
        color: #fff;
        background-color: rgba(3, 3, 55, 0.5);
        padding-bottom: 1em;
        border-radius: 1em;
        font-weight: 700;

        h2 {
            color: rgb(230, 57, 70);
            font-weight: 700;
            font-size: 2.8em;
            line-height: 3em;
        }
    }
}

@media (max-width: 768px) {
    .banner-image {
        min-height: 400px;
    }

    h1.display-4 {
        font-size: 2rem;
    }

    .lead {
        font-size: 1rem;
    }
}

.advantage{
    margin-top: 7em;
    overflow: hidden;
    ul{
        padding-left: 2em;
        li{
            padding:.2em 0;
            line-height: 1.8em;
            .red{
                font-weight: 700;
                color: var(--brand-color);
            }
        }
    }
}

section.introduce {
    h2 {
        font-size: 2.5em;
        font-weight: 700;
        color: rgb(85, 85, 85);
    }

    a.button {
        color: var(--primary-color);
        padding: 0 2px;
    }

    .content {

    }
}

section.customers-say{
    background: rgb(228, 228, 228);
    padding-bottom: 3em;
    .say-title{
        padding:3em 0;
        text-align: center;
        color:#2b2d42;
        h2{
            color: #555;
        }
    }
    .said-item{
        background: #fff;
        margin-bottom: 2em;
        img{
            width:100%;
        }
        .detail{
            padding:2em 2.5em;
            h3{
                font-size: 1.3em;
                font-weight: 700;
                color:rgb(85, 85, 85);
                margin-top:3em;
            }
            h6{
                font-size: .8em;
                text-transform: uppercase;
                font-weight: 700;
                color:rgb(85, 85, 85);
                line-height: 2em;
                opacity: .8;
            }
            p{
                color:rgb(43, 45, 66);
                padding: 1em 0;
                font-size: 1em;
            }
            .btn-box{
                border-top:2px solid rgba(0, 0, 0, 0.09);
                padding-top:2em;
                a.button{
                    background: rgb(3, 3, 55);
                    color: #fff;
                    text-transform: none;
                    padding:0 3em;
                    .icon{
                        margin-left: 1em;
                        font-weight: normal;
                    }
                    &.link-underline{
                        background: transparent;
                        color: var(--primary-color);
                        padding:0 .3em;
                        text-transform: uppercase;
                        &:hover{
                            color: #333;
                        }
                    }
                }
            }
        }
    }
}

section.questionnaire{
    .tab-content{
        max-width: 900px;
        justify-self: center;
    }
    h2.title{
        text-align: center;
        padding-top:2em;
        font-size: 2.56em;
        font-weight: 700;
        color:rgb(85, 85, 85);
    }
    p.p2{
        text-align: center;
    }
    .nav{
        margin-top: 3em;
        .nav-item{
            flex-grow: 1;
        }
        .nav-link{
            text-align: center;
            display: block;
            padding:.8em 0;
            text-transform: uppercase;
            border-radius: 0;
            font-size:.8em;
            font-weight: 700;
            color:#fff;
            background: rgba(0,0,83,.5);
            &.active{
                background: var(--brand-color-light);
                color:#fff;
            }
        }
    }
    .faq-list{
        list-style:none;
        li{
            padding: 1em 0;
        }
        .question{
            padding: .5em 1em;
            background: rgba(0,0,83,.2);
        }
        .answer{
            padding: .5em 3em;
        }
    }
}

section.feedback-form{
    padding-bottom: 8em;
    .banner{
        position: relative;
        margin-top: 5em;
        height: 400px;
        img{
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .slogan{
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.331);
            display: flex;
            align-items: center; /* 垂直居中 */
            justify-content: center; /* 水平居中，可选 */
            h2{
                font-weight: 700;
                font-size:2.2em;
                color: white;
                text-shadow: 1px 1px 1px rgba(0, 0, 0, .5);
            }
        }
    }
    form.feedback {
        margin: 5em 3em;
    }
}

.product-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1) !important;
}

.rating {
    color: var(--brand-color);
}

.bg-brand {
    background-color: var(--brand-color);
}

.text-brand {
    color: var(--brand-color);
}

.btn-outline-brand {
    color: var(--brand-color);
    border-color: var(--brand-color);
}

section.home-banner{
    height: 300px;
}

@media (max-width: 992px){
    .big-showcase {
        margin-bottom: 15em;
        .number-box{
            bottom:-12em;
        }
    }
}

@media (min-width: 992px) {
    section.customers-say{
        .said-item{
            img{
                width:33%;
                float: left;
            }
            .detail{
                width:67%;
                float: right;
            }
            clear: both;
            &.odd{
                img{
                    float: right;
                }
                .detail{
                    float: left;
                }
            }
        }
    }
}